diff --git a/src/kits/opengl/GLView.cpp b/src/kits/opengl/GLView.cpp
index 8e6ee8f0c5..c8cced213d 100644
--- a/src/kits/opengl/GLView.cpp
+++ b/src/kits/opengl/GLView.cpp
@@ -37,6 +37,7 @@
 
 #include <assert.h>
 #include <stdio.h>
+#include <string.h>
 
 #include <DirectWindow.h>
 #include <GLRenderer.h>